Assume a dataset with a Key Performance Indicator (KPI) [appearing in one column] data for years ranging from 1985 to 2010 for 114 countries. This dataset has 170,000 rows of data and one row below the last row for every country, there is a total of the KPI column. So, if there are 25 rows […]
Read More →
Compute year wise weighted average on a large dataset
{ 2 Comments }